Gasoline engine



FIG. 1 is a perspective view from the front-top-right side of the gasoline engine showing our new design;

FIG. 2 is a front view of the design shown in FIG. 1;

FIG. 3 is a rear view of the design shown in FIG. 1;

FIG. 4 is a left side view of the design shown in FIG. 1;

FIG. 5 is a right side view of the design shown in FIG. 1; and,

FIG. 6 is a top view of the design shown in FIG. 1.

The broken lines shown in FIG. 2 are included for the purpose of illustrating environment and form no part of the claimed design. 

The ornamental design for a gasoline engine, as shown and described. 